> I used the trace file from NLANR to test Bro. But Bro does nothing
> bad checksum.
That's because those traces don't have any packet contents.
But the checksum function seems do not check the checksum of contents, just the packet head.
> What should I do , to make trace file available to Bro?
You should first consider whether it will be useful to analyze them with
Bro, given a lack of contents.
I see the stepping.bro is using the ON/OFF algorithm, when report "time".
I have a novel way to detect connection pair! And I want to compare my algorithm with the ON/OFF.
If so, then "redef ignore_checksums = T" will turn off the checksum tests.
Have nice day!